package LeetCode刷题.之前的算法;

public class symmetricTree {
    //判断一颗二叉树是否对称
    public static void main(String[] args) {

    }
    private static class TreeNode{
        TreeNode left,right;
        int val;
    }
//    public static  boolean isSymmetric(TreeNode root) {
//
//    }
}
